Yokihiro Okada 1990
Basics
Imported print text
                              Edited in Tibetan by Yokihiro Okada. India et Tibetica 19, Bonn 1990
Imported raw data
                              452.1.1 Edited in Tibetan by Yokihiro Okada. India et Tibetica 19, Bonn 1990
Source refers as an edition to  (1)